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