One vertex per element, one color per generator, with an edge from x to x·s.
(2,7)(3,9)(5,13)(12,15)(17,18)(19,24)(20,30)(21,25)(22,31)(23,27)(26,28)(29,32)(33,34)(35,39)(36,40)(37,41)(38,42)(43,46)(44,47)(45,48) involution — undirected(1,2,6,7)(3,4,9,8)(5,10,13,14)(11,12,16,15)(17,19,23,29)(18,24,27,32)(20,28,21,22)(25,31,30,26)(33,34,38,42)(35,39,36,40)(37,41,45,48)(43,46,44,47)(1,3)(2,8)(4,7)(5,11)(6,9)(10,15)(12,14)(13,16)(17,20,23,21)(18,25,27,30)(19,28,29,22)(24,31,32,26)(33,35,38,36)(34,39,42,40)(37,43,45,44)(41,46,48,47)(1,3)(2,4)(5,11)(6,9)(7,8)(10,12)(13,16)(14,15)(17,21,23,20)(18,25,27,30)(19,22,29,28)(24,31,32,26)(33,34)(35,39)(36,40)(37,41)(38,42)(43,46)(44,47)(45,48)(1,4)(2,9)(3,7)(5,12)(6,8)(10,16)(11,14)(13,15)(17,18)(19,24)(20,25)(21,30)(22,26)(23,27)(28,31)(29,32)(33,36,38,35)(34,40,42,39)(37,43,45,44)(41,46,48,47)(1,5,6,13)(2,10,7,14)(3,11,9,16)(4,12,8,15)(17,22)(18,26)(19,20)(21,29)(23,28)(24,25)(27,31)(30,32)(33,37,38,45)(34,41,42,48)(35,43,36,44)(39,46,40,47)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.