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