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