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