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