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