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