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