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