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