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