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