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