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