One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,8)(4,9)(5,13)(6,7)(10,15)(11,12)(14,16)(17,18)(19,28)(20,21)(22,32)(23,25)(24,29)(26,31)(27,30)(33,34)(35,42)(36,39)(37,40)(38,44)(41,46)(43,47)(45,48) involution — undirected(2,7)(3,9)(10,13)(11,16)(17,19,23,29)(18,24,25,28)(20,30,31,22)(21,32,26,27)(33,34)(35,42)(36,39)(37,40)(38,41)(43,48)(44,46)(45,47)(2,7)(3,9)(10,13)(11,16)(18,25)(19,29)(20,31)(27,32)(33,35,39,37)(34,40,36,42)(38,43,46,45)(41,47,44,48)(1,3,6,9)(2,8,7,4)(5,11,15,16)(10,14,13,12)(17,20)(18,26)(19,30)(21,25)(22,29)(23,31)(24,27)(28,32)(33,36,39,34)(35,40,37,42)(38,44,46,41)(43,47,45,48)(1,4,6,8)(2,9,7,3)(5,14,15,12)(10,11,13,16)(17,21,23,26)(18,20,25,31)(19,27,29,32)(22,28,30,24)(33,37,39,35)(34,40,36,42)(38,43,46,45)(41,48,44,47)(1,5,6,15)(2,10,7,13)(3,11,9,16)(4,12,8,14)(17,22,23,30)(18,27,25,32)(19,20,29,31)(21,28,26,24)(33,38)(34,41)(35,43)(36,44)(37,45)(39,46)(40,47)(42,48)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.