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