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