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