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