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